LAS VEGAS, NV - MAY 25: Rob Kardashian poses for photos with fans during his new Arthur George by Rob Kardashian sock collection unveiling at Neiman Marcus on May 25, 2013 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)

NEW YORK, NY - APRIL 30: Rob Kardashian and Khloe Kardashian Odom of 'Keeping Up With The Kardashians' attend E! 2012 Upfront at NYC Gotham Hall on April 30, 2012 in New York City. (Photo by Dimitrios Kambouris/E/NBCU Photo Bank via Getty Images for E!)

LOS ANGELES, CA - MARCH 21: Rob Kardashian is seen on March 21, 2013 in Los Angeles, California. (Photo by JB Lacroix/WireImage)

LOS ANGELES, CA - APRIL 01: Rob Kardashian is seen on April 01, 2013 in Los Angeles, California. (Photo by GVK/Bauer-Griffin/GC Images)

LOS ANGELES, CA - APRIL 01: Rob Kardashian is seen on April 01, 2013 in Los Angeles, California. (Photo by GVK/Bauer-Griffin/GC Images)

LAS VEGAS, NV - MARCH 16: Television personality Rob Kardashian makes an appearance at the Kardashian Khaos store at the Mirage Hotel and Casino on March 16, 2013 in Las Vegas, Nevada. (Photo by Marcel Thomas/FilmMagic)

ATLANTIC CITY, NJ - SEPTEMBER 29: Brody Jenner (L) and Rob Kardashian take pictures with fans while hosting The Pool After Dark at Harrah's Resort on Saturday September 29, 2012 in Atlantic City, New Jersey. (Photo by Tom Briglia/FilmMagic)

MANILA, PHILIPPINES - OCTOBER 27: Rob Kardashian and American socialite and model Kylie Jenner showcase designs by Human on the runway on day five of Philippine Fashion Week Spring/Summer 2013 on October 27, 2012 in Manila, Philippines. (Photo by Jeoffrey Maitem/Getty Images)

MANILA, PHILIPPINES - OCTOBER 27: Rob Kardashian and American socialite and model Kylie Jenner showcase designs by Human on the runway on day five of Philippine Fashion Week Spring/Summer 2013 on October 27, 2012 in Manila, Philippines. (Photo by Jeoffrey Maitem/Getty Images)

PARIS, FRANCE - SEPTEMBER 19: Rob Kardashian is seen strolling on September 19, 2012 in Paris, France. (Photo by Marc Piasecki/FilmMagic)

NEW YORK, NY - APRIL 30: (L-R) Rob Kardashian, Khloe Kardashian Odom and Lamar Odom of Keeping Up With The Kardashians attend 2012 E! Upfront at Gotham Hall on April 30, 2012 in New York City. (Photo by James Devaney/WireImage)

Rob's post comes only a few days after the 27-year-old model seemed to be calling out his sister Kylie Jenner, who is dating Chyna's ex Tyga, for copying her cooking show idea. "Bi**h Bye," Chyna wrote on Instagram. "Follow @cookingwithchyna #InfatuatedWitChy."

Tyga, who has a son with Chyna, defended Kylie in a NSFW Snapchat video on Monday night. "In 2016, mother f**kers need to stop acting like they invented every mother f**king thing out here," the 26-year-old rapper said to camera.

It's still bizarre timing for Rob to post a message about disowning his family. On Tuesday, ET confirmed that Kris Jenner had purchased a $2.3 million, 4,256 sq. ft home for her only son. The house was bought under the family trust and is located in an upscale gated community in Calabasas, California.

The location of the new home is conveniently close to Rob's famous family. His sisters, Khloe and Kourtney Kardashian, and Kylie, all live in the same gated community, while Kris and sister Kim Kardashian West live about a mile away in Hidden Hills, California. Chyna lives in Tarzana, which is less than a half hour drive from Calabasas.

When ET spoke with Kris earlier this month, she admitted that she's out of the loop about her son's new girlfriend. "I don't really know much about their relationship. I think they're definitely friends, and they seem great," the 60-year-old momager said. "Rob has been in a really good place for a while. He's on it right now, and he's engaged [in life]. I love seeing him happy about what he's doing."